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Emulsion pathway for gelatin cross‐linking
Author(s) -
Xu G.,
Ruckenstein E.
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070470804
Subject(s) - gelatin , emulsion , monomer , polymer chemistry , swelling , aqueous solution , pulmonary surfactant , photographic emulsion , chemical engineering , nonionic surfactant , aqueous medium , emulsion polymerization , materials science , chemistry , organic chemistry , polymer , silver halide , engineering
A new method for gelatin cross‐linking is suggested that starts with the generation of an emulsion between an aqueous solution containing gelatin and a surfactant, and a monomer (MMA) that contains an initiator (AIBN). The emulsion is prepared at 50°C under intense stirring, but is brought, subsequently, to room temperature. There are conditions under which the gellike emulsions thus obtained are transparent and extremely stable at room temperature. A slow cross‐linking reaction occurs in the latter gels that leads to a material that is insoluble in water. The swelling of this material in water, which is very large after 5 days, reduces appreciably after 25 days of reaction. The cross‐linking occurs only when MMA contains the initiator. © 1993 John Wiley & Sons, Inc.
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